Angry guy agreed to sell girlfriend's twat for stack of cash

I noticed this couple fighting in public park. When I came close, the guy was almost ready to slap his girl, so I had to stop him. She had lost his money and he was very mad screaming on her. I must say - I really like this poor, scared girl and it was a good chance to save her and maybe even fuck her. I told them that I can help with cash, but my price was sweet girl's pussy...